Yes -- it's notable that poetry of Kabir (1440-1518) was included in the great compendium of Sikh ecstatic verse. I hadn't till now noted or considered that Kabir was a contemporary of Guru Nanak (1469-1539). I assume that when (generations later) the Adi Granth was compiled, it was felt that Kabir's verses emerge (one may say) out of the same gnosis as that of the Sikh Gurus. When in India, with help of a tutor I studied a couple of Kabir's poems -- an enriching experience. Hope to delve more into that material in future. Methinks the world could also use a lyrical translation of the Guru Granth Saheb! Have you ever considered approaching that, Sardarji?